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a truck covers 400 m in 850 s while smoothly slowing down to a final speed of 280 msa find its original speedb find its
a railroad car of mass 24000 kg is moving with a speed of403ms it collides and couples with three other coupled
a solid square pinewood raft measures 36m on a side and is 270 m thick what is the total mass of swimmers that the raft
a woman finds the front windshield of her car covered with ice at-120degc the ice has a thicknessof 465 multiplied by
a dentists chair with a patient in it weighs 2260 n the output plunger of a hydraulic systembegins to lift the chair
you are moving into an apartment and take the elevator to the6th floor suppose your weight is 770 n and that of
a calculate the total force of the atmosphere acting on the topof a table that measures 16 mmultiplied by 15 m nb what
an rlc circuit includes a 10 resistor15 microf capacitor and 50 mh inductor the capacitor is ratedat 1200 v the circuit
if 40 l of antifreeze solutionspecific gravity 080 is added to 35 l of water to make a 75 l mixture what is the
two people wish to push a big beer freezer weighing 2000 n up aramp inclined at an angle of 370o with the horizontal
a bottle has a mass of 3500 g whenempty and 9840 g when filled with water when filled with another fluid the mass is
a roller coaster at an amusement park starts outon a level track500m long then goes up a 250-m incline at an angle
the muon with mass mmu209me actsas a heavy electron the muon can bind to a proton to form a muonicatom calculate the
a 120 n force with a fixed orientation does work on a particle as the particle moves through displacement d 200i - 400j
two people are pulling a boat through the water as in the figurebelow each exerts a force of 600 n directed at a theta
a parallel-plate capcitor with air dielectric has a plate area of 75cm2 if the capacitor is fully charged by a 300-v
turning a doorknob through 040 of a revolution requires 012 of workwhat is the torque required to turn the
the two plates of a capacitor hold 2200microc and -2200 microc of chargerespectively when the potential difference is
earths atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space if the protons all
a lifeguard on a beach observes that waveshave a speed of 260 ms and a distance of 250 m between wavecrests what is the
a ball is released from rest and rolls down an incline plane requiring 4 sec to cover a distance of 100cm down the
a proton is in a vacuum near the surface of earth where should a second proton be placed so that the electrostatic
vector1 is 66 uits long and points along the negative x axisvector2 is 85 units long and points at 45 degrees to the
a satellite is in an elliptical orbit at altitudes ranging from310 to 890 km atthe high point its moving at 733 kmshow
a delivery truck travels 18 blocks north 10 blocks east and 16blocks south what is its final displacement from the